Multi-function integrated polarizer/optical film structure and manufacturing method thereof

ABSTRACT

A multi-function integrated polarizer/optical film structure and manufacturing method thereof solves the disadvantages of O type or E type polarizers that cannot simultaneously have high polarizing efficiency and high transmittance. The present invention utilizes optical design to a polarizer/optical film having a plurality of material layers on substrates. The present invention is a multi-function integrated polarizer/optical film structure and manufacturing method thereof, that allows an LCD image to have high polarizing efficiency, high transmittance, wide-angle, high contrast and super-film characteristics simultaneously.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a multi-function integrated:polarizer/optical film structure and manufacturing method thereof, andmore particularly, to a structure that can utilize optical design coats,a different materials polarizer/optical film on a plurality ofsubstrates to generate an image with high polarization, hightransmittance, wide-angle and high contrast characteristicssimultaneously and a manufacturing method thereof.

2. Description of Related Art

Liquid crystal displays (hereinafter referred to as LCD) use two-pieceof polarizing films to produces a linearly polarized light achieve theeffect of contrast. A backlight module of the LCD provides a primarylight. The primary light is following liquid crystal twisted to generatethe linearly polarized light when the primary light passes through afirst polarization film. When the linearly polarized light has passedthrough a second polarization, it will generate the effect of contrast.

In fact, to arrive viewer of the light is under 5% than the originallight when the original light passed through the refraction, thereflection and the absorption of the multi-layer materials. A dichroicpolarizer of the absorption rate and the transmittance is effect factorsof brightness in the LCD. The polarizing film decides liquid crystaldisplay contrast and viewing angle. The degree of polarization ofcontrast and light loss of viewing angle is adjudging the measurementsparameter of the polarizing film. Thereof, the polarizing efficiency,the transmittance, the contrast and light loss will decide the displayseffect of the LCD.

Commercial polarizers typically use O iodine as the predominant type;its principle merit is high polarizing efficiency (99.9%) andtransmittance (44%-46%). The main disadvantages of the O iodinepolarizers is following aspects: (1) The O iodine polarizers have theacute of light loss in wide viewing, so the O iodine polarizers muchwith a wide-angle film to achieve a high contrasts performance; (2) TheO iodine polarizers have poor temperature and humidity; (3) The O iodinepolarizers mechanical properties is not strong, so the O iodinepolarizers must have a protective film pasted onto it to strengthen thenature at the outside surface; (4) The O iodine polarizers can onlypasted onto outside the monitor.

Another type of polarizating film is the E liquid crystal polarizatingfilm which a novel polarizer of the present. The E polarizating filmmainly has a discotic liquid crystal with absorption when the lightpasses through the discotic liquid crystal, O polarization light isabsorbed, but E polarization light can pass through, thereby achievingthe linearly polarized light effect. The E polarizating film polarizingefficiency of the best optics effect at present is approximately 95% andthe transmittance of between 40%-44%. The advantages of E polarizatingfilm are: (1) its thickness is approximately only 0.3-0.8 micrometers;(2) it is produced in a liquid crystal cell and sited on the LCD.

Opposed to the iodine series and the E type polarizating film, anothercoat type of polarizating film is a dye series polarizating film whichit mainly is absorption carrier. The influence absorbency parameters ofdye series polarizating film are: (1) its absorption coefficient of dyemolecules; (2) its increased dye density and (3) its polarizating filmthickness. The main advantages of the dye series polarizating film are:(1) its have good temperature and humidity; (2) it is have a diversenumber of coat manner choices and (3) it is produced in a liquid crystalcell.

At present iodine series polarizer technology of prior art can be foundin U.S. Pat. No. 4,591,512, a method for making visible range dichroicpolarizer material comprising a uniaxially stretched film of polyvinylalcohol stained with iodine and treated with a borating solutioncontaining a zinc salt. The mechanical properties, the temperature andhumidity of the polarizer are not good. Besides the body of iodinepolarizating film, it pasted a protect film with triacetyl cellulose(TAC) on the upper and lower side. Thereof, the present iodine seriespolarizating film thickness is approximately 200 micrometers

The E type polarizer technology of prior art can be found in, forexample, U.S. Pat. Nos. 6,583,284, 6,563,640, 6,174,394, 6,049,428 and5,739,296. The above technology utilities coating manufacture to makepolarizating film of the discotic liquid crystal with absorption effecton a surface of substrates. When passes the dry process, thepolarizating film will become the E type polarizating film. The light isproduced the E type polarized light when it passed through the E typepolarizating film.

Another type of polarizating film is the O type polarizating film. The Otype polarizating film utilizes a dye coat on the surface of substrateto forming the polarizating film. The O type polarizer technology ofprior art can be found in, for example, U.S. Pat. Nos. 5,812,264,6,007,745 and 5,601,884.

A conventional polarizing efficiency and transmittance curves schematicdraw of the O type, polarizating film is shown in FIG. 1A. The verticalaxis coordinates is a polarizing efficiency and transmittance percent ofO type polarizating film. The cross axis coordinates is a wavelength.The Figure is shows a curve distribute for polarizing efficiency 10 andtransmittance 12 on different wavelength of the O type polarizatingfilm.

A conventional polarizing efficiency and transmittance curves schematicdraw of the E type polarizating film is shown in FIG. 1B. The verticalaxis coordinates is a polarizing efficiency and transmittance a percentof E type polarizating film. The cross axis coordinates is a wavelength.The Figure is shows a curve distributes for polarizing efficiency 14 andtransmittance 16 on different wavelength of the E type polarizatingfilm.

SUMMARY OF THE INVENTION

For eliminating the defects of the prior art, the applicant proposes amulti-function integrated polarizer and film structure and amanufacturing method thereof.

The main objective of the present invention is provides a multi-functionintegrated polarizer/optical film structure and a manufacturing method.The multi-function integrated polarizer/optical film structure is amulti-layer film. The multi-layer film structure of the polarizingefficiency and transmittance is through by an optic and a systemregulation design with advantage of the E type and the O typesimultaneously. The multi-layer film using different dye seriesmaterials achieve the multi-function integrated polarizer and filmstructure with high polarizing efficiency and high transmittance.

For achieving the objectives above, the present invention provides amanufacturing process for a manufacturing method of a multi-functionintegrated polarizer/optical film structure, comprises providing atleast one substrate; and coating a polarizer/optical film on saidsubstrate.

The present invention further provides a multi-function integratedpolarizer/optical film structure, comprising A multi-function integratedpolarizer/optical film structure, comprises at least one substrate; anda polarizer/optical film having a plurality of material layersrespectively coated on one side of said at least one substrate oropposite sides of said at least one substrate.

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing aspects and many of the attendant advantages of thisinvention will be more readily appreciated as the same becomes betterunderstood by reference to the following detailed description, whentaken in conjunction with the accompanying drawings, wherein:

FIG. 1A is a conventional polarizing efficiency and transmittance curvesschematic draw of the O type polarizating film in accordance with theprior art;

FIG. 1B is a conventional polarizing efficiency and transmittance curvesschematic draw of the E type polarizating film in accordance with theprior art;

FIGS. 2 a-e is a polarization film schematic drawing illustratingvarious types of the material by coat manner on a substrate inaccordance with the present invention;

FIGS. 3 a-p is a schematics drawing for display unit using amulti-function integrated polarizer/optical film structure in accordancewith the present invention; and

FIG. 4 is a polarizing efficiency and transmittance curves schematicdraw of the multi-function integrated polarizer/optic film in accordancewith the present invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

An absorption rate and a polarizing efficiency for light is increase dueto a two-superimposition polarizating film thickness greater than asingle polarizating film when the light passed through therein, but atransmittance for light is decrease. The two-superimpositionpolarizating film problem includes a basic film itself and an opticalaxis position between films. The optical axis position deviation anglewill be absorption parts of light intensity tend to a degree oftransmittance for light.

The present invention is combining two polarizers of low polarizationlight to single integrate polarization film with high polarizingefficiency and high transmittance for use a nonlinear optics.

FIGS. 2 a-e is a polarization film schematic drawing illustratingvarious types of the material by coat manner on a substrate inaccordance with the present invention. A multi-function integratedpolarizer/optical film structure is applied to a polarization film, awide-angle film or a normal optic film as in FIG. 2 a. The structurecomprises a polarizer/optical film 32 having a plurality of materiallayers respectively coated on one side of at least one substrate 30. Thestructure is combining with two layers stack polarizer/optical film anda substrate for illustrates in this figure. Wherein the material layersof the polarizer/optical film are arranged on the same of the substrateand the material of substrate is a transmission substrate or anon-transmission substrate.

The material layers of the polarizer/optical film 32 comprise a firstpolarizer/optical film 320 and a second polarizer/optical film 322. Thefirst polarizer/optical film and the second polarizer/optical film isconstituted by various kinds of dye-type material layers, such as O-typefilm, E-type film, P-type film, S-type film and combination of abovefilms. The combination type of the polarizer/optical film could such asO+O type, E+E type, O+E type, P+S type, P+O type, P+E type, S+O type orS+E type. The polarizer/optical film using the same or differentdye-type materials is patterned by a coating manner.

The first polarizer/optical film 320 is sitting one side of thesubstrate 30 and the second polarizer/optical film 322 is sittinganother side as shown in FIG. 2 b. The first polarizer/optical film 320and second polarizer/optical film 322 are constituted by various kindsof dye-type material layers. The polarizer/optical films 34 of aplurality of material layers is sitting the same one of the substrate asshown in FIG. 2 c. The polarizer/optical films 34 of a plurality ofmaterial layers using the same dye-type material or different dye-typematerial combined with the multi-function integrated polarizer/opticalfilm structure.

The FIG. 2 d is based on the FIG. 2 c. The first polarizer/optical film320 is sitting another of the substrate 30 and the secondpolarizer/optical film 322 is sitting of the polarizer/optical films 34of a plurality of material layers as shown in FIG. 2 d. Thepolarizer/optical films 34 of a plurality of material layers is sittingtwo side of the substrate as shown in FIG. 2 e. The polarizer/opticalfilms 34 of a plurality of material layers using the same dye-typematerial or different dye-type material combined with the multi-functionintegrated polarizer/optical film structure.

FIGS. 3 a-p is a schematics drawing for display unit using amulti-function integrated polarizer/optical film structure in accordancewith the present invention. In this embodiment using two substratesillustrated but it is not limited. The display unit comprises at leastof substrate. The at least of substrate is a first substrate 300 and asecond substrate 302 as shown in FIG. 3 a. The first substrate 300 andthe second substrate 302 is transmission substrate or non-transmissionsubstrate, wherein the first substrate 300 and the second substrate 302is a vertical arrangement. The polarizer/optical films 34 of a pluralityof material layers is sitting any side of the first substrate 300 andthe second substrate 302. The polarizer/optical films 34 of a pluralityof material layers is using the same dye-type material or differentdye-type material. The polarizer/optical films 34 of a plurality ofmaterial layers on the second substrate 302 is to face the firstsubstrate 300. A plurality of display fluid media 36 filled between onthe first substrate 300 and the second substrate 302. The display fluidmedium is liquid crystal, electrophoresis, self-luminous object or otherfluid medium for easy display.

The first substrate 300 and the second substrate 302 is a verticalarrangement and is sitting for face-to-face as shown in FIG. 3 b. Thepolarizer/optical films 34 of a plurality of material layers is sittinganother side on the first substrate 300 and the second substrate 302individually. The polarizer/optical films 34 of a plurality of materiallayers on the first substrate 300 is sitting to face one of the secondsubstrate 302. Another of the second substrate 302 is sitting thepolarizer/optical films 34 of a plurality of material layers as shown inFIG. 3 c.

The polarizer/optical films 34 of a plurality of material layers on thefirst substrate 300 is sitting to face the polarizer/optical films 34 ofa plurality of material layers as shown in FIG. 3 d. One side of thefirst substrate 300 and the second substrate 302 is sitting thepolarizer/optical films 34 of a plurality of material layers. Anotherside of the first substrate 300 and the second substrate 302 is sittinga third polarizer/optical film 38 as shown in FIG. 3 e. One side of thesecond substrate 302 is only sitting the polarizer/optical films 34 of aplurality of material layers and is face-to-face the thirdpolarizer/optical film 38 of the first substrate 300 as shown in FIG. 3f.

The third polarizer/optical film 38 of the first substrate 300 issitting face-to-face the second substrate 302 as shown in FIG. 3 g. Thepolarizer/optical films 34 of a plurality of material layers is sittingone side of the first substrate 300 and the second substrate 302,wherein the polarizer/optical films 34 of a plurality of material layersof the first substrate 300 is face-to-face the polarizer/optical films34 of a plurality of material layers of the second substrate 302 asshown in FIG. 3 h. The polarizer/optical films 34 of a plurality ofmaterial layers is sitting one side of the first substrate 300 and thesecond substrate 302, wherein the polarizer/optical films 34 of aplurality of material layers of the first substrate 300 is face-to-facethe second substrate 302, Another side of the second substrate 302 issitting third polarizer/optical film 38 as shown in FIG. 3 i.

One side of the first substrate 300 is sitting the polarizer/opticalfilms 34 of a plurality of material layers and another side is sittingthe third polarizer/optical film 38. A half of the polarizer/opticalfilms 34 of a plurality of material layers is sitting one side of thesecond substrate 302 and another half of the polarizer/optical films 34of a plurality of material layers is sitting of the another side,wherein the half of the polarizer/optical films 34 of a plurality ofmaterial layers of the second substrate 302 is face-to-face the thirdpolarizer/optical film 38 of the first substrate 300 as shown in FIG. 3j.

One side of the second substrate 302 is sitting the polarizer/opticalfilms 34 of a plurality of material layers and another side is sittingthe third polarizer/optical film 38. A half of the polarizer/opticalfilms 34 of a plurality of material layers is sitting one side of thefirst substrate 300 and another half of the polarizer/optical films 34of a plurality of material layers is sitting of the another side,wherein the half of the polarizer/optical films 34 of a plurality ofmaterial layers of the first substrate 300 is face-to-face thepolarizer/optical films 34 of a plurality of material layers of thesecond substrate 302 as shown in FIG. 3 k.

A half of the polarizer/optical films 34 of a plurality of materiallayers is sitting one side of the second substrate 302 and another halfof the polarizer/optical films 34 of a plurality of material layers issitting of the another side. A half of the polarizer/optical films 34 ofa plurality of material layers is sitting one side of the firstsubstrate 300 and half of the polarizer/optical films 34 of a pluralityof material layers is sitting of the another side. The half of thepolarizer/optical films 34 of a plurality of material layers of any sideof the first substrate 300 is face-to-face the half of thepolarizer/optical films 34 of a plurality of material layers of any sideof the second substrate 302 as shown in FIG. 31. A half of thepolarizer/optical films 34 of a plurality of material layers is sittingone side of the first substrate 300 and half of the polarizer/opticalfilms 34 of a plurality of material layers is sitting of the anotherside. The polarizer/optical films 34 of a plurality of material layersis sitting one side of the second substrate 302. The half of thepolarizer/optical films 34 of a plurality of material layers of any sideof the first substrate 300 is face-to-face the polarizer/optical films34 of the second substrate 302 as shown in FIG. 3 m. A half of thepolarizer/optical films 34 of a plurality of material layers is sittingone side of the first substrate 300 and half of the polarizer/opticalfilms 34 of a plurality of material layers is sitting of the anotherside. The polarizer/optical films 34 of a plurality of material layersis sitting one side of the second substrate 302. The half of thepolarizer/optical films 34 of a plurality of material layers of any sideof the first substrate 300 is face-to-face the second substrate 302 asshown in FIG. 3 n.

A half of the polarizer/optical films 34 of a plurality of materiallayers is sitting one side of the second substrate 302 and half of thepolarizer/optical films 34 of a plurality of material layers is sittingof the another side. The polarizer/optical films 34 of a plurality ofmaterial layers is sitting one side of the first substrate 300, whereinthe half of the polarizer/optical films 34 of a plurality of materiallayers of any side of the second substrate 302 is face-to-face thepolarizer/optical films 34 of a plurality of material layers of thefirst substrate 300 as shown in FIG. 3 o. A half of thepolarizer/optical films 34 of a plurality of material layers is sittingone side of the second substrate 302 and half of the polarizer/opticalfilms 34 of a plurality of material layers is sitting of the anotherside. The polarizer/optical films 34 of a plurality of material layersis sitting one side of the first substrate 300, wherein the half of thepolarizer/optical films 34 of a plurality of material layers of any sideof the second substrate 302 is face-to-face the first substrate 300 asshown in FIG. 3 p.

The multi-function integrated polarizer and film structure of thepresent invention has the characteristic and the advantage is followingaspect:

-   -   (1) The multi-function integrated polarizer and film structure        is have high polarization, high transmittance, high contract and        wide viewing characteristic.    -   (2) The multi-function integrated polarizer and film structure        is super-film structure.    -   (3) The multi-function integrated polarizer and film structure        is produced inside (or outside) a liquid crystal cell.    -   (4) The multi-function integrated polarizer- and film structure        is constituted by various kinds of material layers, such as        O-type film, E-type film, P-type film, S-type film and        combination of above films.    -   (5) The multi-function integrated polarizer and film structure        is no limit for material cost, so could reduce product cost.    -   (6) The polarization and transmittance of the multi-function        integrated polarizer and film structure is through by optic for        design.    -   (7) The multi-function integrated polarizer and film structure        is simply of manufacture and easy for combination with optic        characteristic polarizating film.    -   (8) The multi-function integrated polarizer and film structure        is having O type and E type polarized advantage and solving        disadvantage of O and E type.    -   (9) The multi-function integrated polarizer and film structure        is applied to the many kinds of substrate.

A polarizing efficiency and transmittance curves schematic draw of themulti-function integrated polarizer and optic film is shows in FIG. 4.The vertical axis is a percent coordinates of polarizing efficiency andtransmittance percent of the multi-function integrated polarizer andoptic film. The cross axis coordinates is a wavelength. The Figure isshows a curve distributes for polarizing efficiency 18 and transmittance20 on different wavelength of the multi-function integrated polarizerand optic film. The multi-function integrated polarizer and optic filmwith a high polarizing efficiency and a high transmittance is differentfor the O type and E-type polarization film of the prior art.

The present invention provides a manufacturing process for themulti-function integrated polarizer and optic film. The multi-functionintegrated polarizer/optical film structure is applied on an opticaldesign of a wide angle, a thin film, a high brightness, a highpolarization value and a high transmittance value. The manufacturingprocess comprises providing at least one substrate, wherein said the atleast one substrate is a transmission substrate or a non-transmissionsubstrate. The multi-function integrated polarizer/optical filmstructure is coats on the at least one substrates. The step of coatingis achieved by a manner of one of a slot-die coating, an extrusioncoating, a Mayer rod coating and a blade coating. The multi-functionintegrated polarizer/optical film structure is patterned by said manner.The multi-function integrated polarizer/optical film has a plurality ofmaterial layers using the same or different dye-type materials. Themulti-function integrated polarizer/optical film is coated on a thinfilm transistor (TFT) of a display by said manner.

The multi-function integrated polarizer/optical film is using dye-typematerials and constituted by various kinds of material layers, such asO-type film, E-type film, P-type film, S-type film and combination ofabove films. The multi-function integrated polarizer/optical film of thepolarizing efficiency value and said transmittance value are designedvia an optical parameter. An optical parameter equation for calculatingsaid polarizing efficiency value is given by${Ep} = {\frac{{T\quad 0} - {T\quad 90}}{{T\quad 0} + {T\quad 90}}.}$The Ep is polarizing efficiency value; the T0 is a paralleltransmittance of non-polarization through the multi-function integratedpolarizer/optical film; and the T90 is a vertical transmittance ofnon-polarization through the multi-function integrated polarizer/opticalfilm.

An optical parameter equation for calculating said transmittance valueis given by $T = {\frac{{T\quad 0} + {T\quad 90}}{2}.}$The T is transmittance; the T0 is a parallel transmittance ofnon-polarization through the multi-function integrated polarizer/opticalfilm; and the T90 is a vertical transmittance of non-polarizationthrough the multi-function integrated polarizer/optical film. Thepolarizing efficiency value and the transmittance value of themulti-function integrated polarizer/optical film structure are obtainedthrough a combination of a non-linear optically design and calculation.That is integrate two low effects polarizer films to a signalpolarizer/optical film with high polarization and high transmittancesimultaneously.

The present invention of the polarizing efficiency and the transmittanceis shows through by a nonlinear optics design and redistribute betweeneach of the film. In fact, the polarizing efficiency and transmittanceof the multi-function integrated polarizer/optical film is decides bythe whole films. In addition, the designed of the polarizing efficiencyand transmittance although is a fix value, but between the filmscombination has various change for different environment and thematerial ingredient. The polarizing efficiency and transmittance of themulti-function integrated polarizer/optical film is design by nonlinearoptic and distributes combination. When the films superimposition, thefilms cannot eliminate needs transmittance but also enhance the whole ofthe polarizing efficiency.

It is to be understood, however, that even though numerouscharacteristics and advantages of the present invention have been setforth in the foregoing description, together with details of thestructure and function of the invention, the disclosure is illustrativeonly, and changes may be made in detail, especially in matters of shape,size, and arrangement of parts within the principles of the invention tothe full extent indicated by the broad general meaning of the terms inwhich the appended claims are expressed.

1. A manufacturing method of a multi-function integratedpolarizer/optical film structure, comprising the following steps:providing at least one substrate; and coating a polarizer/optical filmon said substrate.
 2. The manufacturing method as claimed in claim 1,wherein the step of coating is achieved by a manner of one of a slot-diecoating, an extrusion coating, a Mayer rod coating and a blade coating.3. The manufacturing method as claimed in claim 2, wherein thepolarizer/optical film is patterned by said manner.
 4. The manufacturingmethod as claimed in claim 2, wherein said polarizer/optical film iscoated on a thin film transistor (TFT) of a display by said manner. 5.The manufacturing method as claimed in claim 1, the polarizer/opticalfilm has a plurality of material layers using the same or differentdye-type materials.
 6. The manufacturing method as claimed in claim 1,wherein said multi-function integrated polarizer/optical film structureis applied on an optical design of a wide angle, a thin film, a highbrightness, a high polarization value and a high transmittance value. 7.The manufacturing method as claimed in claim 6, wherein said polarizingefficiency value and said transmittance value are designed via anoptical parameter.
 8. The manufacturing method as claimed in claim 6,wherein said polarizing efficiency value and said transmittance value ofsaid multi-function integrated polarizer/optical film structure areobtained through a combination of a non-linear optically design andcalculation.
 9. The manufacturing method as claimed in claim 7, whereinan optical parameter equation for calculating said polarizing efficiencyvalue is given by:${Ep} = \frac{{T\quad 0} - {T\quad 90}}{{T\quad 0} + {T\quad 90}}$where, the Ep is polarizing efficiency value; the T0 is a transmissionwith polarization parallel to the transmission axis; and the T90 is atransmission with polarization perpendicular to the transmission axis.10. The manufacturing method as claimed in claim 7, wherein an opticalparameter equation for calculating said transmittance value is given by:$T = \frac{{T\quad 0} + {T\quad 90}}{2}$ where, the T is transmittance;the T0 is a transmission with polarization parallel to the transmissionaxis; and the T90 is a transmission with polarization perpendicular tothe transmission axis.
 11. A multi-function integrated polarizer/opticalfilm structure, comprises: at least one substrate; and apolarizer/optical film having a plurality of material layersrespectively coated on one side of said at least one substrate oropposite sides of said at least one substrate.
 12. The structure asclaimed in claim 11, wherein said substrate is a transmission substrateor a non-transmission substrate.
 13. The structure as claimed in claim11, wherein said polarizer/optical film using the same or differentdye-type materials is patterned by a coating manner.
 14. The structureas claimed in claim 11, wherein said polarizer/optical film isconstituted by various kinds of material layers, such as O-type film,E-type film, P-type film, S-type film and combination of above films.15. The structure as claimed in claim 11, wherein the material layers ofsaid polarizer/optical film are arranged on the same side or differentsides and are combined by a stacking manner.
 16. The structure asclaimed in claim 11, wherein said multi-function integratedpolarizer/optical film structure is applied to a polarization film, awide-angle film or a normal optic film.
 17. A display unit using amulti-function integrated polarizer/optical film structure, comprising:a plurality of substrates; a polarizer/optical film having a pluralityof material layers arranged on one side or opposite sides of saidsubstrates; and a plurality of display fluid media filled between onsaid substrates.
 18. The display unit as claimed in claim 17, whereinsaid substrate is transmission substrate or non-transmission substrate.19. The display unit as claimed in claim 17, wherein saidpolarizer/optical film using the same dye-type material or differentdye-type material is patterned.
 20. The display unit as claimed in claim17, wherein said polarizer/optical film is constituted by various kindsof material layers, such as O-type film, E-type film, P-type film,S-type film and combination of above films.
 21. The display unit asclaimed in claim 17, wherein the material layers of saidpolarizer/optical film are arranged on the same side or different sideon said polarizer/optical film and are combined by a stacking manner.22. The display unit as claimed in claim 17, wherein said display fluidmedium is liquid crystal, electrophoresis, self-luminous object or otherfluid medium for easy display.